<p>Numerical value similar to HTTP status. Contains information on the type of error that occurred: for example, a data input error, privacy error, or server error. This is a required parameter.</p>
<p>A string literal in the form of <code>/[A-Z_0-9]+/</code>, which summarizes the problem. For example, <code>AUTH_KEY_UNREGISTERED</code>. This is an optional parameter.</p>
<p>The request must be repeated, but directed to a different data center.</p>
<h4><aclass="anchor"href="#examples-of-errors"id="examples-of-errors"name="examples-of-errors"><iclass="anchor-icon"></i></a>Examples of Errors:</h4>
<ul>
<li>FILE_MIGRATE_X: the file to be accessed is currently stored in a different data center.</li>
<li>PHONE_MIGRATE_X: the phone number a user is trying to use for authorization is associated with a different data center.</li>
<li>NETWORK_MIGRATE_X: the source IP address is associated with a different data center (for registration)</li>
<li>USER_MIGRATE_X: the user whose identity is being used to execute queries is associated with a different data center (for registration)</li>
</ul>
<p>In all these cases, the error description’s string literal contains the number of the data center (instead of the X) to which the repeated query must be sent.
<ahref="/api/datacenter">More information about redirects between data centers »</a></p>
<p>The query contains errors. In the event that a request was created using a form and contains user generated data, the user should be notified that the data must be corrected before the query is repeated.</p>
<h4><aclass="anchor"href="#examples-of-errors"id="examples-of-errors"name="examples-of-errors"><iclass="anchor-icon"></i></a>Examples of Errors:</h4>
<ul>
<li>FIRSTNAME_INVALID: The first name is invalid</li>
<li>LASTNAME_INVALID: The last name is invalid</li>
<li>PHONE_NUMBER_INVALID: The phone number is invalid</li>
<li>PHONE_CODE_HASH_EMPTY: phone_code_hash is missing</li>
<li>PHONE_CODE_EMPTY: phone_code is missing</li>
<li>PHONE_CODE_EXPIRED: The confirmation code has expired</li>
<li>API_ID_INVALID: The api_id/api_hash combination is invalid</li>
<li>PHONE_NUMBER_OCCUPIED: The phone number is already in use</li>
<li>PHONE_NUMBER_UNOCCUPIED: The phone number is not yet being used</li>
<li>USERS_TOO_FEW: Not enough users (to create a chat, for example)</li>
<li>USERS_TOO_MUCH: The maximum number of users has been exceeded (to create a chat, for example)</li>
<li>TYPE_CONSTRUCTOR_INVALID: The type constructor is invalid</li>
<li>FILE_PART_INVALID: The file part number is invalid</li>
<li>FILE_PARTS_INVALID: The number of file parts is invalid</li>
<li>FILE_PART_Х_MISSING: Part X (where X is a number) of the file is missing from storage</li>
<li>MD5_CHECKSUM_INVALID: The MD5 checksums do not match</li>
<li>PHOTO_INVALID_DIMENSIONS: The photo dimensions are invalid</li>
<li>FIELD_NAME_INVALID: The field with the name FIELD_NAME is invalid</li>
<li>FIELD_NAME_EMPTY: The field with the name FIELD_NAME is missing</li>
<li>MSG_WAIT_FAILED: A request that must be completed before processing the current request returned an error</li>
<li>MSG_WAIT_TIMEOUT: A request that must be completed before processing the current request didn't finish processing yet</li>
<p>Similar to <ahref="#400-bad-request">400 BAD_REQUEST</a>, but the app should not display any error messages to user in UI as a result of this response. The error message will be delivered via <ahref="/constructor/updateServiceNotification">updateServiceNotification</a> instead.</p>
<p>The maximum allowed number of attempts to invoke the given method with the given input parameters has been exceeded. For example, in an attempt to request a large number of text messages (SMS) for the same phone number.</p>
<p>An internal server error occurred while a request was being processed; for example, there was a disruption while accessing a database or file storage.</p>
<p>If a client receives a 500 error, or you believe this error should not have occurred, please collect as much information as possible about the query and error and send it to the developers.</p>
<p>If a server returns an error with a code other than the ones listed above, it may be considered the same as a 500 error and treated as an <ahref="#500-internal">internal server error</a>.</p></div>
</div>
</div>
</div>
<divclass="footer_wrap">
<divclass="footer_columns_wrap footer_desktop">
<divclass="footer_column footer_column_telegram">
<h5>Telegram</h5>
<divclass="footer_telegram_description"></div>
Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.
